SAFE
The core of this job is crawling over excavators, dozers, cranes and haul trucks in mud, cold and dust — pulling hydraulic cylinders, rebuilding final drives, chasing intermittent electrical faults, replacing undercarriage — none of which robotics can do at field sites. AI is genuinely eating the diagnostic paperwork layer: fault-code interpretation, telematics-driven failure prediction, service manual lookup, warranty claim write-ups and parts ordering. What remains is the physical repair plus the call on whether a machine is safe to return to a job site with a crew depending on it, which is a real accountability role even without a license.
Headcount grew steadily across the period.
Median pay $53,370 → $65,510 -1.8% in real terms
This line is counted by the Bureau of Labor Statistics — the one figure on this page that isn't a judgement of ours. Headcount moves on demand, offshoring, demographics and the business cycle, and automation is one term among several, often not the loudest.
So a falling line is not evidence that AI did it, and a rising one is not evidence that it won't. Both happen in this register: some occupations resist automation and shrink anyway, others are highly automatable and keep growing. The marked year is 2020.
BLS projection, 2024–2034
+5.8% 188,700 → 199,600 on the projections basis
Hard to automate, and growing
The work resists current AI and the BLS projects +5.8% more of these jobs by 2034. Note that safe does not mean well paid — several of the fastest-growing resistant occupations are among the lowest paid on the register.
Different clocks. The score is what current AI could do to this work today. The projection is how many of these jobs will exist in 2034. Everything between the two — how fast employers actually adopt, whether demand grows in the meantime — is why they can point opposite ways without either being wrong.
~16,500 openings a year on average, including replacing people who leave.
MechanicTrucksmithBrake MechanicCrane MechanicField MechanicHoist MechanicHydro MechanicTruck MechanicClutch MechanicDinkey MechanicDredge MechanicMaster MechanicMobile MechanicShovel MechanicCrane TechnicianField TechnicianDragline MechanicForklift MechanicSki Lift MechanicBulldozer MechanicEquipment MechanicFork Lift MechanicHydraulic MechanicMachine Overhauler
Holding it up: embodiment . Weakest point: liability shield .
Tasks largely resist digitisation Diagnosing a leaking travel motor by feel and sound, torquing track shoe bolts to spec, pressing bushings, and re-shimming a swing gearbox are irreducibly manual — telematics may point you at a circuit, but the wire-by-wire chase behind a cab harness on a 12-year-old dozer still happens with a multimeter in your hand, which is why this sits at 17 rather than mid-band; the paperwork and fault-code lookup layer that AI does absorb is real but is a small slice of the shift.
Hands-on in uncontrolled environments 20 is the ceiling because the work goes to the machine, not the reverse: field service trucks to muddy pits, quarries and highway shoulders, working under a raised bucket, in trenches, on ladders against a haul truck tire taller than you, in whatever weather the site has that day — no controlled bay, no fixed fixture, no repeatable approach path.
Certification preferred, not legally required No state licence gates this trade — you can be hired on mechanical aptitude alone; the 5 reflects that employers and dealers lean hard on OEM certifications (Caterpillar, Deere, Komatsu), ASE Medium/Heavy Truck series, plus EPA 609/608 for A/C refrigerant work and crane-related inspection credentials in some jurisdictions, but none of that puts your personal name on the legal hook the way a PE stamp or an aircraft mechanic's A&P signature does.
Exists to be accountable for ambiguous calls 14 is earned at the moment you decide a machine goes back into service: signing off a repaired crane hoist brake, a rebuilt steering circuit, or a brake system on a haul truck running a downhill grade means a crew's safety rides on your call, and you make it with incomplete information — no torque spec tells you whether a marginal pin bore will hold another 500 hours or whether that intermittent fault will strand the machine mid-lift.
The verdict above describes this occupation as a whole. Almost nobody does the typical version of a job — tick what's actually in your week and see how your own mix sits.
Your task mix speaks to task resistance (17/20 here) — how much of the day's work current AI already does. That is the dimension the boxes above are about.
It cannot move the other three. Liability shield (5/20) is whether the law requires a licensed human to sign. Trust premium (11/20) is whether buyers specifically pay for a person. Judgment and accountability (14/20) is whether the role exists to own consequential calls. Those are facts about the occupation's standing, not about which tasks are in your week — a paralegal who does only trial exhibits still holds no licence. Together they are 30 of this occupation's 67 points (45%).
Embodiment (20/20) is also a property of the work rather than the worker, but we don't tag individual tasks as physical or not, so the picker can't tell you anything about it. That's a limit of this tool, not a claim.
Did we get the list right? Tell us what's missing — the tasks are written from the outside, and you're reading this from the inside.
The moves above are yours to make. This is the other half: what would have to change in the world for the occupation itself to score higher. None of it is in any one person's gift, but it is where the floor actually comes from. Scores here are not a one-way ratchet. Only two of the five dimensions — task resistance and embodiment — track what machines can do. The other three track law, what buyers will pay for, and who is answerable, and those move in both directions, often in response to the same pressure AI creates. If every lever below landed, this occupation would score around 85/100, still SAFE.
Independent (non-dealer) repair rights: if state right-to-repair statutes for agricultural and construction equipment (Colorado HB24-1121 already covers ag; similar bills filed elsewhere) force OEMs to release diagnostic tools, independent shops can compete on a named-technician relationship rather than being locked out — buyers paying for a specific trusted mechanic rather than a dealer queue
Task-mix shift is genuine here: the occupation has a routine tier (fault-code lookup, manual retrieval, warranty write-ups, parts ordering) and a judgment tier (intermittent electrical faults, wear-vs-failure calls, field improvisation on out-of-production machines). As OEM telematics platforms absorb the routine tier, the residual day is the tier AI cannot reach — plus growing electrification and high-voltage battery work on machines like Cat and Volvo electric excavators, which adds new non-automatable diagnostic labor
Mandatory periodic inspection/certification of mobile cranes and aerial lifts by a qualified person is already in OSHA 1926.1412 and ANSI/ASME B30.5 — if state licensing boards or OSHA extend named, personally-signed competency certification (like NCCCO's crane inspector credential) to excavators, dozers and haul trucks used on public works, the mechanic's sign-off becomes a legally required licensed act rather than an employer-internal judgment
Insurer-driven documentation: if construction equipment insurers or bonding companies require a named, credentialed technician's signature on return-to-service records as a condition of coverage after a fatality claim (already routine in aviation and elevator work), personal exposure attaches without any new statute
If mine or highway agencies formalize the return-to-service decision as a named individual's responsibility in incident investigation practice — as MSHA already does for mobile equipment defect records under 30 CFR 56.14100 — the accountability becomes documented and attributable rather than diffuse
The limit. Embodiment is already maxed at 20 and cannot rise. The realistic ceiling is roughly high-70s: liability_shield is the only dimension with substantial headroom, and equipment-mechanic licensing has no national professional body pushing for it the way electricians or elevator constructors do. Trust premium is structurally capped because the buyer is a fleet manager optimizing downtime cost, not a consumer choosing a human for its own sake.
| Los Angeles-Long Beach-Anaheim, CA | 6,610 | $81,000 +24% |
| Houston-Pasadena-The Woodlands, TX | 5,330 | $62,410 -5% |
| Dallas-Fort Worth-Arlington, TX | 4,620 | $62,860 -4% |
| Phoenix-Mesa-Chandler, AZ | 4,460 | $63,440 -3% |
| New York-Newark-Jersey City, NY-NJ | 4,380 | $78,060 +19% |
| Atlanta-Sandy Springs-Roswell, GA | 3,480 | $60,730 -7% |
| Riverside-San Bernardino-Ontario, CA | 3,090 | $76,040 +16% |
| Chicago-Naperville-Elgin, IL-IN | 2,570 | $74,090 +13% |
| Fairbanks-College, AK | 260 | $104,000 +59% |
| San Jose-Sunnyvale-Santa Clara, CA | 510 | $95,980 +47% |
| San Francisco-Oakland-Fremont, CA | 2,370 | $95,410 +46% |
We have no reported case of a named organisation automating this occupation. Not one deployment, not one announcement.
That is worth saying out loud next to a score of 67. The verdict above is about what the work exposes — what current AI could do to these tasks. It is not a claim that anyone has done it. For this occupation those two things have come apart completely: the capability argument is on this page, and the evidence column is empty.
Has AI actually changed your work? One tap, anonymous, and the running tally is public. Nothing else is asked of you.
Rather than check back: get the digest and we'll tell you what changed — or watch a single occupation from its own page.